Return-Path: Message-ID: <53E3B2AF.50605@intel.com> Date: Thu, 07 Aug 2014 19:09:03 +0200 From: Loic Poulain MIME-Version: 1.0 To: Marcel Holtmann CC: "Gustavo F. Padovan" , Johan Hedberg , linux-bluetooth@vger.kernel.org Subject: Re: [RFC] Bluetooth: HCI H5 fast retransmit References: <1406911076-8714-1-git-send-email-loic.poulain@intel.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Sender: linux-bluetooth-owner@vger.kernel.org List-ID: Hi Marcel, This patch is not so much out-of-scope of the H5 because specification only gives "recommended parameters" regarding timeout calculation. I tested it with only one H5 controller (rtl8723). This mechanism is very beneficial with this controller due to a relative high packet loss. However I'm going to rework this patch to be more specific (only fast retransmit if the invalid ack number is a duplicate of the last acked packet) + comments. I don't see any obvious H5 incompatibility issue, therefore, extra flag shouldn't be required. Regards, Loic -- Intel Open Source Technology Center http://oss.intel.com/